First mandibular premolar with three canals: case report

Julia Gabiroboertz Cardoso, Camila Leão De Azevedo, Arthur Pimentel Barroso, Jefferson José de Carvalho Marion, Thaís Mageste Duque, Maíra Do Prado.

Objective: The aim of this case report was to describe the endodontic treatment of a mandibular first premolar with three canals. Case report: A 54-year-old male patient sought Federal University of Rio de Janeiro (UFRJ) emergency care with painful tooth #34. Clinical/radiographic examination revealed severe caries. Pulp sensibility tested positive and exacerbating, with no periapical symptoms at palpation and percussion. Therefore, the patient was diagnosed with irreversible pulpitis. He was subjected to anesthesia, kept under rubber dam isolation and subjected to root canal access. Mechanical preparation was carried out by the crown-down technique, with working length set at 1mm from the root apex in all three canals. 2.5% sodium hypochlorite was used as irrigating solution, whereas 17% EDTA was used to remove smear layer. Root canal filling was carried out by Tagger’s hybrid technique with Endofill sealer and gutta-percha cones. Final radiograph revealed the presence of three canals, one lingual and two buccal ones, all of which were at the apical third starting point. A furcation connecting the buccal canals (intercanal) was also found. Final considerations: Knowing and mastering root canal anatomical traits are key factors to achieve success in endodontic treatment.

Keywords: Premolar. Root canal treatment. Root canal filling.

How to cite: Cardoso JG, Azevedo CL, Barroso AP, Marion JJC, Duque TM, Prado M. First mandibular premolar with three canals: case report. Dental Press Endod. 2017 Jan-Apr;7(1):14-9. DOI: http://dx.doi.org/10.14436/2358-2545.7.1.014-019.oar

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